{"answers":{"affected":"8 open source packages ship an affected version, including Microsoft.OpenAPI.Kiota, Microsoft.OpenAPI.Kiota.Builder and Microsoft.OpenApi.Kiota.","exploited":"There is no known exploitation of CVE-2026-59861 in the wild and no public exploit code.","fix":"Upgrade Microsoft.OpenAPI.Kiota to 1.32.0 or later.","what":"CVE-2026-59861 is a high-severity code injection vulnerability in microsoft kiota, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-59861 and fix it if it is affected.\n\nWhat it is: CVE-2026-59861 is a high-severity code injection vulnerability in microsoft kiota, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-59861 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.OpenAPI.Kiota (NuGet): affected from 1.30.0; fixed in 1.32.0\n- Microsoft.OpenAPI.Kiota (NuGet): affected from 1.30.0; fixed in 1.32.0\n- Microsoft.OpenAPI.Kiota.Builder (NuGet): affected from 1.30.0; fixed in 1.32.0\n- Microsoft.OpenAPI.Kiota.Builder (NuGet): affected from 1.30.0; fixed in 1.32.0\n- Microsoft.OpenApi.Kiota (NuGet): affected all versions; fixed in 1.29.1\n- Microsoft.OpenApi.Kiota (NuGet): affected all versions; fixed in 1.29.1\n- Microsoft.OpenApi.Kiota.Builder (NuGet): affected all versions; fixed in 1.29.1\n- Microsoft.OpenApi.Kiota.Builder (NuGet): affected all versions; fixed in 1.29.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-59861/ (Markdown: https://insights.sbomify.com/CVE-2026-59861/index.md)","id":"CVE-2026-59861","markdown":"https://insights.sbomify.com/CVE-2026-59861/index.md","name":"CVE-2026-59861","record":{"aliases":["GHSA-xg2h-5xr2-29jw"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Kiota code generator","requires_auth":"none","summary":"Attackers can inject arbitrary Ruby code into generated model classes via unescaped interpolation markers in OpenAPI schemas, affecting Kiota users.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"}],"description":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator embedded OpenAPI default fields, property names, and other schema-derived strings through CodeMethodWriter.cs and SanitizeForQuotedLiteral() in Writers/StringExtensions.cs into Ruby double-quoted literals without escaping #, allowing attacker-controlled #{expr}, #$var, or #@var interpolation markers to inject arbitrary Ruby code into generated model classes. This issue is fixed in version 1.29.1 and 1.32.0.","ecosystems":["NuGet"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Kiota: Code Generation Literal Injection in Kiota Ruby Generator","id":"CVE-2026-59861","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":8,"n_references":4,"next":{"headline":"Kiota: Code Generation Literal Injection in the Python Generator","id":"CVE-2026-59862"},"packages":[{"ecosystem":"NuGet","fixed":["1.32.0"],"introduced":["1.30.0"],"last_affected":[],"package":"Microsoft.OpenAPI.Kiota","purl":null,"source":"GHSA-xg2h-5xr2-29jw"},{"ecosystem":"NuGet","fixed":["1.32.0"],"introduced":["1.30.0"],"last_affected":[],"package":"Microsoft.OpenAPI.Kiota","purl":"pkg:nuget/Microsoft.OpenAPI.Kiota","source":"GHSA-xg2h-5xr2-29jw"},{"ecosystem":"NuGet","fixed":["1.32.0"],"introduced":["1.30.0"],"last_affected":[],"package":"Microsoft.OpenAPI.Kiota.Builder","purl":null,"source":"GHSA-xg2h-5xr2-29jw"},{"ecosystem":"NuGet","fixed":["1.32.0"],"introduced":["1.30.0"],"last_affected":[],"package":"Microsoft.OpenAPI.Kiota.Builder","purl":"pkg:nuget/Microsoft.OpenAPI.Kiota.Builder","source":"GHSA-xg2h-5xr2-29jw"},{"ecosystem":"NuGet","fixed":["1.29.1"],"introduced":["0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota","purl":null,"source":"GHSA-xg2h-5xr2-29jw"},{"ecosystem":"NuGet","fixed":["1.29.1"],"introduced":["0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota","purl":"pkg:nuget/Microsoft.OpenApi.Kiota","source":"GHSA-xg2h-5xr2-29jw"},{"ecosystem":"NuGet","fixed":["1.29.1"],"introduced":["0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota.Builder","purl":null,"source":"GHSA-xg2h-5xr2-29jw"},{"ecosystem":"NuGet","fixed":["1.29.1"],"introduced":["0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota.Builder","purl":"pkg:nuget/Microsoft.OpenApi.Kiota.Builder","source":"GHSA-xg2h-5xr2-29jw"}],"prev":{"headline":"Kiota: XML Doc-Comment Newline Breakout Code Injection","id":"CVE-2026-59860"},"products":["kiota"],"published":"2026-07-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-17","vendors":["microsoft"]},"summary":"Attackers can inject arbitrary Ruby code into generated model classes via unescaped interpolation markers in OpenAPI schemas, affecting Kiota users.","url":"https://insights.sbomify.com/CVE-2026-59861/"}